If I read the legislation correctly, states are required to check the relevant federal databases to validate status of non-citizens (if you provide a document a

If I read the legislation correctly, states are required to check the relevant federal databases to validate status of non-citizens (if you provide a document attesting citizenship, that check needn't be performed), and the social security numbers of anyone providing it. I don't know if the immigration status checks are tracked, but the social security number checks are, as part of the check is to verify no cross-state usage of the same number for different identities.